20131248 has 20 divisors (see below), whose sum is σ = 52005848. Its totient is φ = 6710400.

The previous prime is 20131229. The next prime is 20131259. The reversal of 20131248 is 84213102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209653 + ... + 209748.

Almost surely, 2^20131248 is an apocalyptic number.

It is an amenable number.

20131248 is an abundant number, since it is smaller than the sum of its proper divisors (31874600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20131248 is a wasteful number, since it uses less digits than its factorization.

20131248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419412 (or 419406 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 20131248 is about 4486.7859320453. The cubic root of 20131248 is about 272.0342373281.

The spelling of 20131248 in words is "twenty million, one hundred thirty-one thousand, two hundred forty-eight".